#include <stdio.h>
int main()
{
    int x;
    //scanf("%d", &x);
    x = 700;
    int digit;
    int ret = 0;

    while( x>0 ) {
        digit = x%10;
        printf("%d", digit);
        ret = ret*10 + digit;
        //printf("x=%d, digit=%d, ret=%d\n", x,digit,ret);
        x /= 10;
    }
    //printf("%d", ret);

    return 0;
}